Updated October 2026
Thomas Edison National Historical Park Weather by Month
Thomas Edison National Historical Park is warmest in July, when the nearest NOAA climate station averages a high of 86°F and a low of 64°F, and coldest in January, with an average high of 38°F and an average low of 21°F. July is the wettest month, with about 4.8 inches of precipitation.
These figures are NOAA's 1991–2020 climate normals, the 30-year average for each calendar month, from the nearest long-record weather station, 4.1 miles from the park's reference point. A single station cannot describe a whole park: temperatures elsewhere in Thomas Edison National Historical Park can differ from these, particularly with elevation.
Warmest month
Jul
86°F avg high
Coldest month
Jan
21°F avg low
Wettest month
Jul
4.8 in avg
Longest days
Jun
14.9 h of daylight
Average weather at Thomas Edison by month
| Month | Avg high | Avg low | Precipitation | Daylight |
|---|---|---|---|---|
| January | 38°F | 21°F | 3.6 in | 9.4 h |
| February | 41°F | 23°F | 2.9 in | 10.4 h |
| March | 49°F | 30°F | 4.2 in | 11.7 h |
| April | 63°F | 40°F | 4.1 in | 13.1 h |
| May | 72°F | 49°F | 4.0 in | 14.3 h |
| June | 81°F | 59°F | 4.6 in | 14.9 h |
| July | 86°F | 64°F | 4.8 in | 14.7 h |
| August | 84°F | 63°F | 4.5 in | 13.6 h |
| September | 78°F | 54°F | 4.5 in | 12.3 h |
| October | 65°F | 43°F | 4.3 in | 10.9 h |
| November | 53°F | 34°F | 3.6 in | 9.7 h |
| December | 43°F | 27°F | 3.4 in | 9.1 h |
| Year total | 48.5 in |
NOAA 1991–2020 climate normals from station USC00282768, 4.1 miles from the park's reference point. Daylight is the monthly average, computed from the park's latitude. Each month links to how crowded Thomas Edison is at that time of year.
Thomas Edison weather by season
Winter: December to February
Average highs bottom out at 38°F in January, between 43°F in December and 41°F in February, with average lows between 21°F and 27°F. The average low is at or below freezing in all three months. Together the three months average 9.9 inches of precipitation, about 20% of the yearly total and less than in any other season. Daylight is at its shortest, about 9.1 hours in December.
Spring: March to May
Average highs climb from 49°F in March to 72°F in May, with average lows between 30°F and 49°F. The average low is at or below freezing in March. Together the three months average 12.3 inches of precipitation, about 25% of the yearly total. Daylight lengthens from about 11.7 hours in March to 14.3 in May.
Summer: June to August
Average highs peak at 86°F in July, between 81°F in June and 84°F in August, with average lows between 59°F and 64°F. Together the three months average 13.9 inches of precipitation, about 29% of the yearly total and more than in any other season. Daylight is at its longest, about 14.9 hours in June.
Fall: September to November
Average highs fall from 78°F in September to 53°F in November, with average lows between 34°F and 54°F. Together the three months average 12.4 inches of precipitation, about 26% of the yearly total. Daylight shortens from about 12.3 hours in September to 9.7 in November.
What the National Park Service says about the weather
Spring and Fall weather can be cool, while summer is usually warm and humid. Winter is frequently snowy and cold. It is recommended that visitors dress for the weather. Visitors may need jackets or rain gear as they will be walking between buildings as they tour the park during inclement weather. Please keep any rain gear/umbrellas with you during your visit.
Weather description courtesy of the National Park Service — official park site.
Today's forecast for Thomas Edison
Averages describe a typical month, not this week. For current conditions and the seven-day outlook, the National Weather Service issues a forecast for the park's reference point at 40.79°N, 74.24°W. It covers that one spot, so other elevations in the park can differ from it, as they do from the averages above.
National Weather Service forecast for Thomas Edison National Historical Park →
Weather and crowds together
July, the warmest month, sees about 1.5× the visitors of the park's average month. August is the busiest month of the year and January the quietest. To see those crowds set against the weather for all twelve months, read the best time to visit Thomas Edison National Historical Park. For hotels, cabins and rentals close to the park, see where to stay near Thomas Edison.
Where to stay near Thomas Edison
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Top-rated places to stay near Thomas Edison
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Frequently Asked Questions
July is the warmest month at Thomas Edison National Historical Park, with an average high of 86°F and an average low of 64°F. That is the 1991–2020 average at the nearest long-record NOAA station, 4.1 miles from the park's reference point. Temperatures inside the park can differ, particularly with elevation.
January is the coldest month at Thomas Edison National Historical Park, with an average low of 21°F and an average high of 38°F, based on NOAA 1991–2020 climate normals.
July is the wettest month, with about 4.8 inches of precipitation. February is the driest, at about 2.9 inches. The station records about 48.5 inches of precipitation in an average year.
Daylight at Thomas Edison National Historical Park runs from about 9.1 hours a day in December to about 14.9 hours in June, computed from the park's latitude.
Weather at nearby parks
10 mi away · warmest in July (87°F)
12 mi away · warmest in July (87°F)
13 mi away · warmest in July (85°F)
13 mi away · warmest in July (85°F)
13 mi away · warmest in July (85°F)
13 mi away · warmest in July (85°F)
Keep exploring
Sources: NOAA NCEI U.S. Climate Normals 1991–2020 (station USC00282768), daylight computed from latitude, weather description from the National Park Service, crowd levels from National Park Service Visitor Use Statistics (1979–2025). Updated 2026-10-11. Lodging results are provided by Stay22; WhenToVisitParks may earn a commission from bookings, at no extra cost to you.